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Vai al moduloOptolong L2 Dual-Combo 2" Filter Set (L-Synergy + L-eXtreme)
The Optolong L2 Dual-Combo 2" Filter Set is designed for astrophotographers using color cameras who want to achieve Hubble Palette (SHO)-style results without switching to a monochrome camera. The kit includes two high-performance filters:
- L-eXtreme (Ha 7nm + OIII 7nm) – selectively isolates the emission lines of Hydrogen-Alpha (656.3nm) and Oxygen III (500.7nm), effectively blocking light pollution.
- L-Synergy (SII 7nm + OIII 7nm) – captures Sulfur II (672.4nm) and Oxygen III (500.7nm) with precision, delivering clean, natural-looking images.
This innovative combination offers a simplified and affordable alternative to traditional narrowband imaging, enabling deep, detailed astrophotography even with fast optical systems down to f/3.3.
Main Benefits
- Perfect for Hubble Palette imaging with color cameras.
- Ideal for deep-sky astrophotography: emission nebulae, supernova remnants, and faint targets.
- Optimized to suppress star halos and gradients, even under full moon conditions.
- Provides maximum creative flexibility with less complexity and lower cost.
- Professional-grade performance: >85% transmission, 1.85mm optical glass, 60/40 surface quality.
Technical Specifications
| Included Filters | L-eXtreme (Ha-OIII), L-Synergy (SII-OIII) |
| Bandwidth (FWHM) | 7nm (Ha, OIII, SII) |
| Unwanted light blocking | 300–1050nm |
| Transmission | >85% |
| Thickness | 1.85 mm |
| Substrate | Polished optical glass (λ/4) |
| Surface Quality | 60/40 – Parallelism: 30'' |
Field Performance
Extensive tests confirm excellent performance even under full moon conditions. With integrations exceeding 20 hours, the L2 Dual-Combo delivers sharp images free from gradients or halos, with clearly separated SII and OIII channels. An ideal choice for astrophotographers who want to maximize the potential of their color camera while reducing workflow complexity and post-processing time.